Cover board and method of making same



Sept. 2 1924. 1,506,997

W. P. PITT COVER BOARD AND METHOD OF MAKING SAME riled liarch 2B. 1921 MM'M a! 0415 I @MWW Patented Sept. 2, 1924.

WILLIAM F. rm, or KANSAS crrY,

MISSOURI, ASSIGNOR r ravine-PITT Manor-Ac- QOMP'ANY, OF KANSAS CITY. MISSOURI, A CORPORATION OF MISSOURI.

COVER BOARD AND METHOD OF MAKING SAME.

To (Mirth-0m it may concern:

Be it. known thatl, WILLIAM P. PITT, a

' citizen'of the United States, residing at Kansas City,inthe county of Jackson and State of Missourh have invented a certain new and useful Improvement in' Cover Boards and Method of Making Same, of which the following is a specification.

.My invention relates to improvements in cover boards and method of making same.

The object of'my invention is to provide a novel cover board adapted for book or hinder covers, which. is ornamental, has great durability, is cheap to make and which will not warp. i 7

My inventipn provides further a novel method of making a cover-board.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawings which illustrate my improved cover board.

Fig. 1 is a perspective view of my improved cover board shown attached to a tem orar binderimember. a r

. Fig. 2 is a longitudinal vertical sectional view of my improved cover board.

Fig. 3 is a cross section of-the same. Fig. t is a perspectiveview of a portion of one of the enveloping members.

Fig. 5 is a plan view of one of the enveloping members before its marginal portions have been folded over the body member. the

latter being shown mounted on the envelopingmembenp; 3 y

. imilar reference characters designate similar parts in the 'ditierent views.

1 designates atla t; body member, which may be of ordinary thick card board. 2, 3, 4 and 5 designate respectively a plurality of layers of relatively hard rigid material, such as vulcanized fiber, which form enveloping members alternate ones of which respectivel embrace op osite sides of the body mem er, each enve oping member being glued to and made integral with the body member, and each enveloping member having marginal portions 6 which are extended from one side of the body member around the edges thereof and are glued to the other side of the body member.

In the making of the cover board, the several layers are consecutively applied after having been sufiiciently softened to enable the marginal portions being folded. The enveloping member 2, while in a softened or Application filed March 28, 1821. Serial No. 456,173.

plastic condition and in the flat form, as shown in Fig. 5'), is glued to'the under side of the body member 1. The mar inal portions 6 are then folded, while so t, around the edges of the bod member and glued to the upper side of'tbe body member. Y

The member 3 is then glued to the upper side of the body member 1 and has its softened marginal portions 6 folded around the edges of the body member and glued to the under side of the member 2. Y r

The member 4 is then glued to the under side of the member 2, and its marginal portions 6 are then folded over the edges of the body member and are glued to the upperside of the member 3. v

The member 5 is then glued to the upper side of the member 3 and its marginal portions 6 are folded over the edges of the body member 1 and are glued to the under side of the member 4. As an inner finish a lining sheet 7 may then be glued to the under side of the member 4 and to the under sides of the portions 6 of the member 5. .5318 members are then permitted to dry and harden, thereby becomingintegralwith each other. Owin to themanner of a plying the enveloping members alternate y to opposite sides of the body member. the enveloping members on drying will not warp the body member. but the structure will retain its smooth flat form, and will have great durability. It may be embossed to simulate morocco leather and has an ornamental appearance. t

Modifications, within the scope of the ap ended claims, may be made without departing from the spirit of my invention.

\Vhat I claim is I. A cover board comprising a fiat body member and two enveloping members, having body portions at opposite sides respectively of said body member. and each enveloping member having a marginal portion extending around the edges of the body member and overlap ing and contacting with both sides thereoi one of said enveloping members embracing the other enveloping member at both sides of the body member, said three members being integrally connected. said overlaping mar inal p0!- tions of the two enveloping mem ers being at opposite sides respectively of said body member.

2. A cover board comprising a flat body member, and two relatineLyJ-garsgl and rigid enveloping memliersrespetivelyi embracing opposite sides thereof and integral therewith, each enveloping, member having margihalrportions extending from one" side of the body member around the edges thereof to and embracing theother side of the body member, substantially as set forth.

3. A cover board comprising a flat body member, and two vulcanized fiber entelop ing members respectively embracing oppositesides thereof and integral therewith, each enveloping member-having marginal ortions extending from one side of the body member around the edges thereof to and embracing'the other side of the body member, substantially as set forth.

4." A cover board'comprising a flat body member, and a plurality of layers of relatively rigid enveloping members, each havin marginal portions extending from one of the body member around the edges thereof and embraeing'the other side of the body member, the 'enyelojping members being "integral with the bodyfmember, alternate enveloping members' respectively embracing opposite sides of the body member, substantially'asset forth.

5. A cover board comprising a flat body miemberdhnd a plurality of layers of vulcaniz'ed fiber enveloping members, each having marginal portions extendin' from one side of the body member around the edges thereof and embracingthe' other side of the {body member, alternate enveloping members respectively embracing opposite sides of the body member, the enveloping members being integral with the body member, substantially as set fort 6. A cover board consistingof a flat body member, and two vulcanized fiber envelopiiig members which while in a relatively softened c'ondition have been respectively glued to opposite sides of the body member each enveloping member having margina portions which while in a softened GOTlflltieirh'ave been extended from one side of theabody member: HI'QL-{ildrllhfl edges thereof and glued to the otherside thereof, substantially as set forth.

7. The method of making a cover board consisting in gluing, while in a softened condition, member two vulcanized fiber enveloping members having marginal portions extending beyond the edges of the body member, and folding said marginal portionsavhile in a softened condition around the edges of the body member and gluing said marginal portions to opposite sides of the body member, substantially as set forth.

8. The method of consisting infglui ng consecutively to opposite sides of abody member a plurality of layers of vulcanized fiber enveloping members, and folding, while in a softened condition, marginal portions of each enveloping member around the edges of the body member and gluing said marginal portions to the other side of the body member, substantially as set forth.

9. In a cover board, a plurality of relatively thin layers of relatively hard material made integral with each other, each ayer having folded over marginal portions, and a flat body member, some of the layers being disposed'at one side of the body memher and the other layers being at the other side of the body member, the marginal porfirms of eachlayer extending from one side of the body member and overlapping the to opposite sides of a flat bodymaking a cover board opposite side of the body member, substantially as set forth.

10. In a cover board, two layers of realively hard material having respectively oppositely facing folded over marginal portions. one of the layers ginal portions of the other layer and having its marginal portions overlapping and embracing the opposite side of the other layer. substantially as set forth.

Tn" testimony whereof I name to this specification.

WILLIAM P. PITT,

have signed my embracing the mar- 

